Railway brake



.,Sept. 2 1924.

B. AMENDOLA RAILWAY BRAKE Filed Oct. 2 5 2 Sheets-Sheet, 1

fwfyrag. NORNE Y'.

B. AMENDOLA RAILWAY BRAKE Sept. 2 1924.

Filed oct, 25, 1922 sheets-sneer 2 l rari/.fr

Patented Sept. 2, 192.4.`

BARTOLOMEO A25J/.1'.ENDOLA, OF SAN FRANCISCO. CALIFORNIA.'

To all whom t may concern.' v

`Be it known that I, BARTOLOMEO AMEN- DoLA, a citizen of Italy, residing at San Francisco, in the county of San Francisco,

State of California, have invented anew and useful Railway Brake, of which the following is aspecification, in` such ull and. clear terms as will enable those skilled in the art to construct and use the same.

Y This invention relates toa railway brake for' cars of all kinds, and its Vobject is to` produce a brake which will be capable of being equally appliedy to all 'of the wheels f of a given truck or car.

Another object of the invention lis toprovide means ywherebyfthe brake will be completely removed from the wheels when not applied, to prevent itl from dragging when no braking eiectshould be applied.

Another object ofthe invention is topro-y vide'a ,brake which will cause' a minimum thrust upon the car' axles thereby-preventing undue .displacement of thetrucks with vrespect to the car axles, and preventing the 25 undue wear of the car axles andtheir journals. y

Y Anotherobject of thev inventionis to provide a simple and'eiiective means for operating the brakes on two trucks from a single power cylinder. y l l Otherobjects of the invention will ap-V pear as the description proceeds.

An embodiment of the invent-ion is shown i` 'i in the accompanying drawings in `which the same reference numeral is applied to the same portion throughout, but I am vaware that there may be modifications thereof.

Fig. 1 is a plan view of a truck having this brake appliedl thereto,

Fig. 2 is a side elevation of the truck shown in Fig. 1, with one of the truck sides removed for the purpose oi' illustration.

Fig. 2HL isa-sectional view on the line 2-2.a

" of Fig. 1,V

Fig. B is a plan view of one of the brake shoes 'carrying bars with one of the brake shoes removed therefrom.

, Fig. Ltris a side elevation of one of the brake shoes, i f Fig. 5 isa back view of one of; th'e brake shoes "f Fig. 6 is a view of one of the brake shoes retaining shackle, v

Fig. 7 is a plan view of ons of this brake vcar wheel 8.v f v .Appiicaiionqfiiea october 25, 1922. serial No. 596,770.

shoes carrying arms and. operating levers removed therefrom,

Fig. `8 isa lplan view of one form oit confV necting link for the operation of twosets of" V brakes,

Fig. 9 is a plan view of the` power.k cylinder and operating members for the operation:`

of two sets of brake shoes,

Fig. 10 is a. longitudinal elevation ofone pair oit the links used to connect the driving head at onev side `of the brakes witlrtlie rods for the operation of the other setv of brakes,

Fig, 11 is a side elevation'ot a portionof a car with two trucks applied thereto, f

Fig. 12 is aside elevation oitaportion of v the car showing the application' of thep'ower cylinder thereto .upon a slightly v larger scale than Fig. 11, and v Y,

"Fig-'13 is a detail view showing the nianner of supporting the brake shoe vcarryingarm,v Fig. 14 is a sectional' view of a. portion of the air brake cylinder-V 'showing the y`manner of connecting thecylinder to -one oi theend I i casings.

In the-present case the car'truck consists of four longitudinally extending frame members 2, two` with-upturned ends and two with depending ends-connectedgtothe end framemejmbers- 21. These latter members are in turn connected together by the two side members 21",' which sidei'nembers-` carry suitable journal boxes whichreceive,

the ends ofthe journals 9 kcarriedbygthe i, :Two transverse barsjlO conn'ectfthelside membersv 21v together ,between veach p aiiwoi' axles. y These .transverse bars 101 support two lrollers-lf-upon which the rectangular` brake operating'iraniefl is movable.k This frame is connected together by means otgtwo plates 6 at its middle portions andpbyrtwoplates 6 atu the' ends-rivets '11"beingused to connect the plates to the two members 1. At the endv ofthe brake operatingframe it carries two projecting lugs 13,' whichI lugs to 'embrace lthe lever 14, pivotally` mounted `have 4two bolts 13v extending therethrough` on'the ,plate v21 adjacent the center offits i lower edge, as indicated at 15. i' v Pivotally mounted ontheiunderside .of the two. upperbars-f-2'are six levers.; `Pivot pins l1' connectwthe levers 5 to .thel 'two members., and other pivot pins llconnect the ends of said levers to the brake operating brackets 7 and to the slidable rectangular frame 1.

The inner end of each lever 5 is slotted to receive its corresponding piny 11, so as to permit the necessary lateral movement of said levers Without binding upon the pivot pins 11. The brake beams are six in number, those lettered a lying upon one side of the car wheels and those lettered b upon the other side of the car wheels.

Each brake beam carries two rollers 19, which rollers ride upon the lower supporting members 2, and each vbrake beam a has two brackets 7 to connect each to the lever 5.

The brake beams b are connected by means of two L-shaped plates l, which brackets are secured to the underside of the rectangular frame members 1-1.

vEach brake beam carries tw'o rollers 18 and 19, which rollers rest upon the lower frame member 2, with the result that when the brake beams b are pushed in one direction to set the brake shoes connected with K the brake beam Z) that the other brake beams will be correspondingly moved in the opposite direction with their brake shoes 4 pulled against the car wheel.

yThe brake shoesconsist of members 2() having one curved face and dove-tailed grooves on the opposite side thereof to connect them to the brake beams.

The brake blocks have a T-shaped flange formed on their back, as indicated at 20, which dove-tailed flange is adapted to be passed into similarly shaped brackets 3 onderside ofthe car frame by means oiz two brackets 37 38 which also form the end castings of the cylinder. Bolts 3Q-connect the two 'end castings together and prevent leakage at the ends of the cylinder.

The casing '38 has the air pipe 39 connected thereto, this air pipefhaving extensions 40, 41 to the ends of the car, as is common.

' yrTheV piston rod 30 extends out one end of the cylinder and is connected to a piston in the usual manner, but has the head 30 connected thereto, said head having ya portion with a transverse horizontally extending curved slot 14 and has two lugs 25 extendingy therefrom between two rollers 25 carried bythe two depending brackets 33.

Y 'The Ihead 30 also has two divergin-g slots of two levers 26. These levers are supported by the pins 24 connected to the depending brackets 34 and at their outer ends they are connected to two rods 27 on opposite sides of lthe power cylinder (note the plan view Fig. 9). v

At their opposite ends these rods 27 'are connected to a cross bar 28 on the end of a bar 29 extending between two rollers 25l supported by the two depending brackets 35.

susV

In order to equalize the strain, the two levers 26 are made up of. two parts 26, 26', as illustrated in Fig. 10, one lpart lgoing above the head 30 and the other part vbelow the same. Y

lhen a car is mounted, as Villustrated in Fig. 11, upon two trucks, the trucks are so positioned that `the levers 14 are on adjacent ends of the two trucks and said levers then extend through the slots 14', 14, and as the car moves around curves the heads in whichsaid slots are formed allow the lever 14 to move laterally with respect thereto while still remaining in an operative position.

The brake shoes consist of the members 4 with grooved faces 4". The shoes have latlevers 26 and said brackets holdsaid levers in such a position as to cause the two heads with the grooved slots for the operation of the levers 14 to move in opposite directions whenever the piston `30 is pushed out of the cylinder, whereby the brakesare applied to the wheels equally on both sides thereof.

It will be noted that asthe rectangular frames 1 move to the left, Fig. 1, thereby pushing each pair of brakes attached thereto, toward its corresponding axle, that 4the other pair of brakes `will be moved in-the opposite direction against the wheels, equalizing the thrust upon the axle.

I claim:

1. In a railroad car brake the combina'- tion with a car truck and its wheels 'of av pair of brake beams on yopposite ,sides ot 30 which receive the pivot pins at one end each set of wheels, a slidable trame con-y nected to the brake beamsA on one side of the wheels, and levers connecting the brake beams on the other side of the Wheels to said frame, whereby movement in one direction causes the brake beams on both sides of the wheels to bear thereon.

2. In a railroad car brake, the combina tion with a car truck and its wheels of a pair of brake beams on the opposite sides of each pair of wheels, a slidable frame on the car truck, means to support the brake beams on one side of each pair of wheels from said frame, levers pivoted on the car truck and connected to the brake beams on the opposite side of the wheels and to the slidable frame whereby the brake beams are caused to move toward the wheels when the slidable frame is moved in one direction, and means to exibly connect the operating mechanism on the truck with the operating mechanism on the car body.

3. In a railroad car brake, the combination with a car truck and its wheels, of a pair of brake beams for each pair of Wheels. a slidable frame, rollers to' support said frame, means to connect said frame to the brake beams to move them in opposite directions simultaneously and means to .flexibly connect said frame to operating means carried by the car body.

4. In a railroad brake, the combination with a car truck and its wheels of a pair of brake beams on opposite sides of each pair of wheels, a slidable frame on the truck, means to support the brake beams from the car truck with one on each side of each pair of wheels, links connecting the other brake beams to said frame whereby the brake beams move in opposite directions,

rollers carrying each brake beam, and means to operate the brakes from a power cylinder on they car. y

5. In an apparatus of the class described,

the combination with a car truck and its pair of brake shoes carried by' each brake beam to bear upon. the peripheries of they wheels.

6. An apparatus of the class described, VV

comprising the combination with a truck and its wheels of a pair of brake beams on the opposite side of each pair of wheels, n a slidable frame on the car truck, means to support the brake-beams from the car frame, vmeans to lrigidly connect one brake beam adjacent each pair of wheels with said frame, a pair of links connecting each other brake beam with said frame whereby when the frame is moved in one direction the brake beams will be moved toward or from the Wheels in opposite directions when the frame is moved in one direction or the other and detachable brake shoes carried by each brake beam for engagement with the periphi eries of the wheels.

vIn testimony whereof I-haveyhereunto set my hand this 16 day of October A. D. 75

BARTOLOMEO AMENDOLA. 

